Finding the Fourth Proportional to 135.19, 202.69 and 71.07
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Solution
The fourth proportional to 135.19, 202.69 and 71.07 is: 106.56
Step by Step Solution
- Step 1: Write the proportion equation
135.19 : 202.69 = 71.07 : x - Step 2: Convert to fraction form
135.19/202.69 = 71.07/x - Step 3: Cross multiply
135.19x = 202.69 × 71.07 - Step 4: Simplify right side
135.19x = 14,405.18 - Step 5: Solve for x
x = 14,405.18/135.19 - Step 6: Final answer
x = 106.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.